North Korea's Kim Jong-Un visits Beijing on unofficial visit
North Korean leader Kim Jong Un and wife Ri Sol Ju, and China President Xi Jinping and wife Peng Liyuan pose for a photo - KCNA
North Korean leader Kim Jong Un waves from a train, as he paid an unofficial visit to China, in this undated photo released by North Koreas Korean Central News Agency (KCNA) in Pyongyang March 28, 2018.
In this March 26, 2018, photo provided March 28, 2018 by the North Korean government, North Korean leader Kim Jong Un, center, smiles as he and Chinese counterpart Xi Jingping, center left, attend a banquet at the Great Hall of the People, in Beijing.
In this March 27, 2018, photo provided March 28, 2018, by the North Korean government, North Korean leader Kim Jong Un, second from right in front row, and his wife Ri Sol Ju, right, visit Chinese Academy of Science in Beijing. - KCNA
People watch a TV broadcasting a news report on a meeting between North Korean leader Kim Jong Un and Chinese President Xi Jinping in Beijing, in Seoul, South Korea - Reuters
A man watches a TV screen showing file images of U.S. President Donald Trump, left, and North Korean leader Kim Jong Un, right, during a news program at the Seoul Railway Station in Seoul, South Korea, Tuesday, March 27 - PTI